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    PRODUCTION OF HIGH-REFRACTIVE INDEX RESIN
    53.
    发明专利
    PRODUCTION OF HIGH-REFRACTIVE INDEX RESIN 失效

    公开(公告)号：JPH02274705A

    公开(公告)日：1990-11-08

    申请号：JP9594089

    申请日：1989-04-14

    Applicant: TORAY INDUSTRIES

    Inventor： OKA KOICHIRO ,  KIMURA MICHIO ,  IGUCHI YUICHIRO

    IPC: C08F12/14 ,  C08F12/00 ,  C08F20/38

    Abstract: PURPOSE:To obtain the subject resin excellent in a refractive index, toughness, Abbe's number, hardness and light resistance and desirable for particularly spectacle lenses by polymerizing a specified polymerizable monomer. CONSTITUTION:A high-refractive index resin is produced by using a compound of formula I (wherein R2 is a group of formula II or III; X is H or CH3; and R2 and R3 are each an aliphatic hydrocarbon residue or an aromatic hydrocarbon residue, provided that when they are aliphatic hydrocarbon residues, the sum of the numbers of their carbon atoms is 1 to 6) as a polymerizable monomer. The obtained resin is excellent in a refractive index, Abbe's number, hardness, transparency and light resistance, and is desirable for use in optical lenses, especially spectacle lenses. The polymerizable monomer of formula I can be obtained by thioesterifying the terminals of a dithiol compound of formula IV by reaction with (meth)acrylolyl chloride or by the addition reaction of the terminals of a dithiol compound with a divinylbenzene.

    PREPARATION METHOD OF POLYAMIDE RESIN AND POLYAMIDE FIBER
    54.
    发明专利
    PREPARATION METHOD OF POLYAMIDE RESIN AND POLYAMIDE FIBER 失效

    公开(公告)号：JP2001200055A

    公开(公告)日：2001-07-24

    申请号：JP2000011050

    申请日：2000-01-19

    Applicant: TORAY INDUSTRIES

    Inventor： KIMURA MICHIO ,  KATO TATSUYA ,  MEGATA HIROYOSHI

    IPC: C08G69/46 ,  D01F6/60

    Abstract: PROBLEM TO BE SOLVED: To obtain a desired amount of end groups by adding a regulator to regulate the amount of end groups to a polyamide resin after polymerization and to provide a means for obtaining a polyamide resin which has good workability during melt processing and good quality. SOLUTION: This preparation method of a polyamide resin comprises a polymerization step in which a raw material for polymerization is polymerized to obtain a polyamide resin; a step of adding a regulator to regulate the amount of end groups to the polyamide resin obtained in the polymerization step and melt blending the same; and a step of removing unreacted regulator to regulate the amount of end groups and its derivative in the polyamide resin obtained in the step of melt blending such that the amount of the unreacted regulator to regulate the amount of end groups and its derivative is 10 ppm or lower based on the polyamide resin.

    PRODUCTION OF THERMOPLASTIC RESIN PELLET
    55.
    发明专利
    PRODUCTION OF THERMOPLASTIC RESIN PELLET 失效

    公开(公告)号：JP2001030238A

    公开(公告)日：2001-02-06

    申请号：JP20693499

    申请日：1999-07-22

    Applicant: TORAY INDUSTRIES

    Inventor： INUKAI TOSHIHIRO ,  KIMURA MICHIO ,  MEGATA HIROYOSHI

    IPC: B29B9/00 ,  C08K5/36 ,  C08L77/00

    Abstract: PROBLEM TO BE SOLVED: To produce thermoplastic resin pellets, to which a powdery additive is added, capable of being stably transported by air immediately before a next process without allowing the additive to fall off from the pellets. SOLUTION: In a method for producing thermoplastic resin pellets while adding two or more kinds of powdery additives thereto, when the degree of compaction of at least one powdery additive A is 57-81% and the degree of compaction of the other powdery additive B is lower than 57%, the addition amt. of the powdery additive A is twice or more that of the powdery additive B in a weight ratio.

    SEPARATION OF DICHLOROCUMENE ISOMER
    59.
    发明专利
    SEPARATION OF DICHLOROCUMENE ISOMER 失效

    公开(公告)号：JPH02229122A

    公开(公告)日：1990-09-11

    申请号：JP5091389

    申请日：1989-03-01

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: B01D15/00 ,  B01D15/08 ,  C07C17/38 ,  C07C17/389 ,  C07C25/02

    Abstract: PURPOSE:To separate especially 3,5-isomor from a mixture of dichlorocumene isomers by using a zeolite having specific silica/alumina molar ratio and pore diameter as an adsorbent and xylene as a desorbent. CONSTITUTION:Especially 3,5-isomer is separated and recovered from a mixture of dichlorocumene isomers by using a zeolite having a silica/alumina molar ratio of >=2 (preferably 2-30) and a pore diameter of 0.6-1.0nm as an adsorbent and xylene as a desorbent. The separation operation is carried out preferably at 50-250 deg.C under atmospheric pressure - 40kg/cm G in liquid phase. The zeolite is preferably selected from faujasite-type zeolite. L-type zeolite and beta-type zeolite. The 3,5-isomer useful as an intermediate for pharmaceuticals, agricultural chemicals, dyes, etc., can be separated and recovered in high purity and efficiency by the present process.

    SEPARATION OF DICHLOROCUMENE ISOMER
    60.
    发明专利
    SEPARATION OF DICHLOROCUMENE ISOMER 失效

    公开(公告)号：JPH02178240A

    公开(公告)日：1990-07-11

    申请号：JP33141688

    申请日：1988-12-27

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNJI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/38 ,  C07C17/389 ,  C07C25/02

    Abstract: PURPOSE:To efficiently absorb and separate a desired dichlorocumene isomer from a dichlorocumene isomer mixture using a specific zeolite as a absorbing agent and simultaneously using a halogenated alkylbenzene, etc., as a desorbing agent. CONSTITUTION:When a desired dichlorocumene isomer, especially 3,5- dichlorocumene useful as an intermediate for agricultural chemical, medicine, dye, etc., is absorbed and separated, a zeolite having >=2, preferably 2-30 silica/ alumina ratio and 0.6-1.0nm pore size, especially one or more kinds of compounds selected from faujasite type zeolite, L type zeolite and beta type zeolite are used as absorbing agent and simultaneously one or more kinds of compounds are used as desorbing agents to industrially and advantageously separate the aimed isomer.

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